Edge-scouring machine



F. M. FURBER.

ED GE scoumwc MACHINE.

APPLICATION FlLED JULY 25,1917.

1,404,752. Patented Jan. 31 1922.

//V VE/V 7 17/7.

FREDERICK Mi EURBER, OF REVERE, MASSACHUSETTS, ASSIGNOR, BY MESN E ASSIGN- MENTS, T UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW' JERSEY,

A CORPORATION OF NEW JERSEY.

EDGE-SCOURING MACHINE.

Application filed July 26,

- specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to abrading machines and is herein illustrated as embodied I in a machine of the general type shown in Patent No. 681,636 granted tome on August 27, 1901.

In the machine of the patentan abrasive belt runs around a supporting roll and a pulley, whose axes are fixed, *andaround a belt tightener which is mounted upon a pivoted arm and is forced out against-one run of the belt by a spring. I g

It is desirable that a hood be provided to carry away the dust'generated by such a machine and that this hood be compact so as not to interfere with the manipulation of the shoe or to obstruct the view of the operator. To this end the upper pulley of the present machine is mounted in a movable carrier which is urged at all times by a spring away from the supporting roll; and the belt is enclosed, except at its extreme lower end by a narrow elongated hood the walls of which are close to and substantially parallel with the straight stretches of the belt. To enable the hood to be so formed and so related to the belt, the movable carrier of the upper pulley is located entirely within the space 1 between the straight stretches of the belt,

and is supported by a wall of the hood itself. With this construction the separate belt tightener of the patented machine is dispensed with and a. compact dust hood and simplified structure are provided.

This and other features of the invention including certain details of construction and combinations of parts will be described in connection with an illustrative machineand pointed out in the appended claims.

Referring now to the accompanying drawig. 1 is a perspective of the head of a machine in which the present invention is embodied; i

Specification of letters Patent. Patented Jan. 31, 1922.

1917. Serial No. 182,999.

Fig. 2 is a detail, principally in section, showing more particularly the means for guiding the belt, and

Fig. 3 a detail, also principally in section, showing the construction of the belt supporting roll.

The machine, which is designed to scour the edges of soles of shoes, comprises a pedestal 5 upon which is mounted a head 7. A driving shaft 9 rotatably mounted in bearings in the head carries near one end a pulley 11, to which power is applied through a belt,

13,- and at the other end a roll 15 which is connected with the shaftin a manner presently to be described. An abrasive belt 17 runs about the roll 15 and about a pulley 19 and a guide 21. The pulley 19 is rotatable in a yoke having a square stem 23 which is slidable in a box 25 connected to and supported by one wall of the hood as hereinafter described. T he pulley is urged upward cone stantly by a spring 27, said spring resting upon a projection 29 formed on the lower end of the cover ofthe boX.

Theguide 21 is in the form of a flanged roller loosely mounted on a stud shaft 31 and held from longitudinal movement with respectto said shaft by a flange on the end of the shaft and a collar 83. The shaft is held in position by a thumb-screw 35 which is threaded through the bearing ofthe shaft and abuts the periphery of the shaft. When the thumb-screw has been loosened, the shaft -31 may be adjusted longitudinally in its bearing to guide the belt properly to the roll 15.

Said roll 15 of the present machine, like that of my patent, has at its outer end an upper guard 37 in the form of a disk, the periphery of which is adapted to run in the rand crease of a shoe and to serve as a guard to prevent injury to the upper. It is desirabl that the edge of the belt should run as close as possible to this guard but should not touch it. If the belt rubs against the guard the edge ofthe belt is worn away; if it is spaced any considerable distance from the guard, .a portion of the edge of the sole is not properly scoured. The belt commonly used with the illustrativemachine is the one shown and described in Patent No. 1,009,709

granted to me November 21, 1911 and is '0 made of a strip of emery cloth withoutany at times to run out of true. With the present guiding device, which is adjustable in a direction substantially parallel to the axis of roll 15, it is possible to maintain the operative portion of the belt in the exact relation desired to the guard 37. a

In order to carry away the dust generated bythe scouring operation, a hood 39 almost entirely encloses the roll, pulley, beltand guide, said hood quite closely conforming to the entire abrading surface of the belt exccpting for the mouth at its lower end through which part of the supporting roll 15 and the extreme lower portion of the belt project. In other words the hood has straight walls opposite to and substantially parallel with all straight portions of the belt and close enough thereto to ensure such draft of air over the surfaces of the belt as to effectively remove all loose dust from the belt. This hood is fastened to the head of the machine by screw-bolts one of which is shown at lland itself carries the box 25 in which the stem 23 of the yoke, which supports the pulley 19, is slidable. Three walls of the hood are integral; the fourth wall is in the form of a door 43 hinged to theedge of the front wall of the hood and held in closed position by a suitable catch, not shown. Referring to the said fourth wall or door as the front of the hood, the box 25 is secured to the rear wall 26 by suitable means such as pins or screws 28. This structure provides for the location and proper support of the upper pulley entirely within the space inside the belt where no part of the carrying mechanism of the pulley can interfere with the compactness of the device as a whole, or the 1 desired and advantageous close and parallel relationship between the straight stretches of the belt and the walls of the hood adjacent thereto. In practice the entire hood, wlth the exception of thedoor 43, is preferably a single casting, and no other support isrequired for the box 25 in which the stem of the pulley yoke is yieldingly carried. A suction pipe 45 is connected with the hood at therear about midway from topto bottom of the hood; and the dimensions of hood and pipe aresuch that the area" of a cross-section of'the pipe is substantially equal to the area of that portion of the mouth of the hood which is open to the flow of air,-that.is, to the whole area less that portion taken up by the belt and roll. This relationship of areas, 111' connection with the contiguity of the a. straight hood walls and the straight-stretches of the belt, ensures amost effective removal of dust generated at the working point of the belt. In the use of machines of this charact-er, some dust or particles adhere to the 1 belt and travel along'with'it, but much of the adhering dust leaves the belt after passingaround and reachii'igthe mouth 'of the ordinaryhood. W1th mypresentconstrue tion, however, this escape of dust is reduced to the minimum because the continuous proximity of the hood walls and belt ensures such a strong draft over the belt that if any dust is not removed by the draft it is because that dust is so strongly attached to the belt that it will not leave it at the mouth of the hood.

It is desirable at times to use belts ofdifferent widths; and, to provide for increasing and decreasing the width of the supporting roll 15, the construction illustrated in Fig. 3 is provided. The upper guard 37 is fastened to the end of the shaft 9 by a screw d? and carries two or more pins l9. The hub or core of the roll is made of compressed felt to provide a slightly yielding frictional sup port for the abrasive belt and has at one end a series of holes to receive the pins 19. This hub or core is held in place against the disk 37 by a flanged collar 55 loose on the shaft 9 and a spring 57 which is located between the loose collar 55 and a secondcollar 59 fastened to the shaft. ,By removing the screw ll", the hub or body of the rollmay be removed and replaced by one of diiferent width, the position of the fixed collar 59 be ing changed, if desired, to get the proper tension in the spring 57.

Although the invention has beenset forth in connection with a particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine which has-been shown and described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States:

1. A scouring machine comprising a rotary roll, a pulley located above the roll, an abrasive belt running around the roll and pulley, a spring actin upon the pulley to maintain it taut, a guide pulley located near the roll and having flanges to engage the edges of the belt, and an elongated hood enclosing all but the lower portion of the belt, the walls of the hood being substantially parallel with the straight portions of the belt and in draft-limiting proximity thereto, said pulleys, roll and spring being located inside the path of the belt and supported by the rear wall of the hood.

2. A scouring machine comprising arotary roll having an upper guard rotatable therewith, an abrasive belt, a pulley for holding the belt in contact with a portion of the periphery of the roll, a spring acting to move the pulley away from the roll and thereby to maintain the belt taut, a guide member for the belt-located'adjacent the'roll, and means whereby the guide member may be moved in a direction substantially paraldesired with reference to the upper guard.

3. A scouring machine comprising aretary roll provided with a guard, an abrasive belt, a pulley located above the roll for holding the belt in contact with a portion of the periphery of the roll, a spring acting to move the pulley away from the roll and thereby to maintain the belt taut, a flanged guide pulley arranged to engage one run of the belt, and

means whereby the guide pulley may be moved in. a direction substantially parallel to the axis of the roll to bring the belt to the proper location with reference to the guard,

4. A member for supporting a belt comprising a rotary shaft, a guard fast to the end thereof, a collar loose on the shaft, a spring for forcing said collar toward said guard, a core upon which the belt is received,

and a detachable connection between the guard and the core.

5. A member for supporting an abrasive belt in contact with the edge of a shoe comprising a rotary shaft, a guard fast to the end thereof and adapted to enter the rand crease of the shoe, a plurality of pins carried-by said guard, a collar loose on said shaft, a spring for forcing said collar toward said guard, and a core upon which the belt is received said core being located between said collar and said guard and having sockets to receive said pins.

In testimony whereof I have signed my name to this specification.

FREDERICK M. FURBER. 

